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2003 gmc envoy_slt
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Discussion Starter · #1 ·
2003 envoy 4.2L....replaced fan clutch/wiring harness. APP assembly. getting code P1217 5v reference. purchased a A/C delco thottle position sensor plug/pigtail. . any guidance on where to start or how to check for the voltage mismatch with a VOM? dont want to replace the entire throttle body without checking the wiring issues first. any help would be GREATLY appreciated. Diagrams? shadow puppets? HELP PLEASE!!!!!!
 

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2003 gmc envoy_slt_xl
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i'm currently going through the same thing but have 1221 code and reduced power I just need to shoot the wire for continuity but which ones idk
 

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2003 gmc envoy_slt
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Discussion Starter · #3 ·
Checked all wires. Ended up being the dorman gas pedal was sending a distorted waveform to the PCM. Installed a genuine GM pedal and it seems to have fixed the issue.
 
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